//
// Created by guasen on 2023/4/15.
//
#include "iostream"
#include "vector"
using namespace std;
//测试resize后vector的默认值
int main(){
    vector<vector<bool>> v;
    v.resize(5);
    for (int i = 0; i < 5; ++i) {
        v[i].resize(5);
    }
    v[1][1]= true;
    cout << v[0][0];
}